APES Review Ag

Which would NOT be an effect on a stream if all trees have been cleared near its path?

• Would contain less nitrates due to runoff
• Would flood more often
• Water temperatures would go down
• Oxygen levels would go down

Which area of a lake produces the most food and oxygen that supports most of the lake's consumers?

• Littoral Zone
• Profundal Zone
• Limnetic zone
• Benthic Zone

Which area of a river contains the coldest water with the highest concentration of oxygen?

• Floodplain zone
• Estuaries
• Source zone
• Transition zone

Irrigation can lead to all of the following EXCEPT:

• Waterlogging
• Salinization
• Depletion of ground water
• Recharging of aquifers

Rachel Carson's contribution to the environmental movement include which of the following?

• Increasing public awareness of the risks of using pesticides.
• Starting the first Earth Day in 1970
• Discovering the thinning of the ozone layer in polar regions
• Being the first female administrator of the EPA

In a typical forest ecosystem, dead trees and fallen trees are most important because of their role in which of the following?

• Providing a valuable source of timber
• Providing habitats for wildlife
• Contributing to soil erosion
• Removing Carbon Dioxide from the air

Which of these is a greenhouse gas produced by domestic livestock?

• NO2
• CH4
• CO
• SO2

Which of these is a greenhouse gas produced from fertilizing soil in agriculture?

• NO2
• CH4
• CO
• SO2

Which of the following is a measure of the amount of suspended material in water?

• Salinity
• Leachate concentration
• pH
• Turbidity

Which of the following is likely to minimize soil erosion?

• No till agriculture
• Herbicide use
• High Yield crops
• Deforestation